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1. panel:    The out-layer  panel is made of galvanized steel sheet, among which is evenly filled with  polyurethane foam within reinforcing rib  embossed with wooden grain ,colours with customer’s demand  

2 Features of panel:  finger protection（national patent）heat preservation, noiseproof,  corrosion prevention, moisture resist, well airtightness  

3. pattern:    pane, long strip

4. system:     torsional spring balance system

5.panel thickness:      40mm，galvanized steel thickness 0.3mm 

 cable drum material：   precision cast aluminium

6.output                :500sets per  day.

7.package:               carton box with epe

8.accessories:            with all galvanized steel hardware

9.door opener:            220±10%Vac ,50HZ, 0.35KW   character of service :  short time(in 5mimutes)  limit switch :mechanical limite   (MOTOR 700N,800N,1000N,1200N)

10 reputation:          ISO9001-2000, CE CERTIFICATE